What To Do When You Have More But It Just Ain’t Enough?

I’m getting to the point where I make a little more than enough money than I can spend on my own and I’m starting to feel guilty everytime I start spending it. It’s not as half much as you may think it is, but if I were to spend it all here I’d really be living a comfortable life (as compared to my previous living standards). Instead I started giving, and saving some. So what’s my problem? For starters if I had just enough to live comfortably then I wouldn’t feel so guilty about it. And if I made about twice what I make now I can actually fly my ass back to Pasadena and settle down. The problem is I’m stuck in between and I can’t foresee how long it will take before I can step into the next level. There are people starving around here you know. But you can’t really save everyone, not especially when you don’t have the first clue on how to save yourself. Anyway I’ve been thinking about investing my few hundred dollars. Any suggestions?